Question

19. What should be added to x2 + y2 + xy to obtain 2x2 + 3xy?
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Answer 1

Answer:

Answer is x²-y²+2xy

Step-by-step explanation:

=(2x²+3xy) - (x²+y²+xy)

=2x²+3xy -x²-y²-xy

= x²-y²+2xy

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